Power plant integrating coal-fired steam boiler with air turbine
A power plant is disclosed in which a steam turbine/coal-fired steam boiler is integrated with an air turbine via using the convection section of the boiler to heat compressed air for the turbine, by indirect heat exchange with the flue gas, the hot turbine exhaust being sent to the boiler as preheated combustion air. In this way, only clean air reaches the turbine and not combustion products which would result from direct firing of fuel in compressed air, whereby coal may be burned instead of premium quality fuels. Platens in the radiant section of the boiler are used both to regulate flue gas temperature and take over some of the usual convection section services to release it for compressed air heating service.
- Assignee:
- Exxon Research and Engineering Co.
- Patent Number(s):
- US 4479355
- OSTI ID:
- 6131938
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
200104* -- Fossil-Fueled Power Plants-- Components
AIR
BOILERS
CARBONACEOUS MATERIALS
COAL
COMBINED-CYCLE POWER PLANTS
COMBUSTION PRODUCTS
COMPRESSED AIR
COMPRESSED GASES
CONTROL
CONVECTION
EFFICIENCY
ENERGY SOURCES
ENERGY TRANSFER
FLUE GAS
FLUIDS
FOSSIL FUELS
FUELS
GASEOUS WASTES
GASES
HEAT TRANSFER
MACHINERY
MASS TRANSFER
MATERIALS
POWER PLANTS
STEAM GENERATORS
TEMPERATURE CONTROL
THERMAL POWER PLANTS
TURBINES
TURBOMACHINERY
VAPOR GENERATORS
WASTES